| 摘要 |
A voice packet decoder has following operations. A receiving buffer stores receiving packets and outputs the oldest packet in every fixed period. When in every the fixed period, if the receiving buffer stores no packets, then a complement packet insert circuit inserts a predetermined complement packet and a counter adds one. Furthermore, a voice decoder generates a synthetic voice signal. A speech/non-speech detection circuit detects whether the synthetic voice signal is speech signal or non-speech signal. When a result of the detecting is non-speech, the counter's value is more than zero, and a number of the stored receiving packets in the receiving buffer is more than one, then a receiving buffer controller discards the oldest packet and subtracts one from the counter's value.
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